private void update(Feed feed)
throws NotSupportedException, SystemException, SecurityException, IllegalStateException,
RollbackException, HeuristicMixedException, HeuristicRollbackException, JMSException {
FetchedFeed fetchedFeed = null;
Collection<FeedEntry> entries = null;
String message = null;
int errorCount = 0;
Date disabledUntil = null;
try {
fetchedFeed =
fetcher.fetch(feed.getUrl(), false, feed.getLastModifiedHeader(), feed.getEtagHeader());
// stops here if NotModifiedException or any other exception is
// thrown
entries = fetchedFeed.getEntries();
if (applicationSettingsService.get().isHeavyLoad()) {
disabledUntil = FeedUtils.buildDisabledUntil(fetchedFeed);
}
feed.setLastUpdateSuccess(Calendar.getInstance().getTime());
feed.setLink(fetchedFeed.getFeed().getLink());
feed.setLastModifiedHeader(fetchedFeed.getFeed().getLastModifiedHeader());
feed.setEtagHeader(fetchedFeed.getFeed().getEtagHeader());
handlePubSub(feed, fetchedFeed);
} catch (NotModifiedException e) {
log.debug("Feed not modified (304) : " + feed.getUrl());
if (feed.getErrorCount() == 0) {
// not modified and had no error before, do nothing
return;
}
} catch (Exception e) {
message = "Unable to refresh feed " + feed.getUrl() + " : " + e.getMessage();
if (e instanceof FeedException) {
log.debug(e.getClass().getName() + " " + message);
} else {
log.debug(e.getClass().getName() + " " + message);
}
errorCount = feed.getErrorCount() + 1;
disabledUntil = FeedUtils.buildDisabledUntil(errorCount);
}
feed.setErrorCount(errorCount);
feed.setMessage(message);
feed.setDisabledUntil(disabledUntil);
feedRefreshUpdater.updateEntries(feed, entries);
}
public static void logout(Context context) {
NBSyncService.softInterrupt();
NBSyncService.clearState();
// wipe the prefs store
context.getSharedPreferences(PrefConstants.PREFERENCES, 0).edit().clear().commit();
// wipe the local DB
FeedUtils.dropAndRecreateTables();
// prompt for a new login
Intent i = new Intent(context, Login.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
context.startActivity(i);
}
public FetchedFeed fetch(
String feedUrl,
boolean extractFeedUrlFromHtml,
String lastModified,
String eTag,
Date lastPublishedDate,
String lastContentHash)
throws FeedException, ClientProtocolException, IOException, NotModifiedException {
log.debug("Fetching feed {}", feedUrl);
FetchedFeed fetchedFeed = null;
HttpResult result = getter.getBinary(feedUrl, lastModified, eTag);
if (extractFeedUrlFromHtml) {
String extractedUrl = extractFeedUrl(StringUtils.newStringUtf8(result.getContent()), feedUrl);
if (org.apache.commons.lang.StringUtils.isNotBlank(extractedUrl)) {
result = getter.getBinary(extractedUrl, lastModified, eTag);
feedUrl = extractedUrl;
}
}
byte[] content = result.getContent();
if (content == null) {
throw new IOException("Feed content is empty.");
}
String hash = DigestUtils.sha1Hex(content);
if (lastContentHash != null && hash != null && lastContentHash.equals(hash)) {
log.debug("content hash not modified: {}", feedUrl);
throw new NotModifiedException();
}
fetchedFeed = parser.parse(feedUrl, content);
if (lastPublishedDate != null
&& fetchedFeed.getFeed().getLastPublishedDate() != null
&& lastPublishedDate.getTime() == fetchedFeed.getFeed().getLastPublishedDate().getTime()) {
log.debug("publishedDate not modified: {}", feedUrl);
throw new NotModifiedException();
}
Feed feed = fetchedFeed.getFeed();
feed.setLastModifiedHeader(result.getLastModifiedSince());
feed.setEtagHeader(FeedUtils.truncate(result.geteTag(), 255));
feed.setLastContentHash(hash);
fetchedFeed.setFetchDuration(result.getDuration());
return fetchedFeed;
}
public static void clearPrefsAndDbForLoginAs(Context context) {
NBSyncService.softInterrupt();
NBSyncService.clearState();
// wipe the prefs store except for the cookie and login keys since we need to
// authenticate further API calls
SharedPreferences prefs = context.getSharedPreferences(PrefConstants.PREFERENCES, 0);
Set<String> keys = new HashSet<String>(prefs.getAll().keySet());
keys.remove(PrefConstants.PREF_COOKIE);
keys.remove(PrefConstants.PREF_UNIQUE_LOGIN);
SharedPreferences.Editor editor = prefs.edit();
for (String key : keys) {
editor.remove(key);
}
editor.commit();
// wipe the local DB
FeedUtils.dropAndRecreateTables();
}
